Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae) Author Malabarba, Luiz R. Author Weitzman, Stanley H. text Comun. Mus. Ciênc. Tecnol. PUCRS 2003 2003-07-01 16 1 67 151 journal article 290639 10.5281/zenodo.10813265 9677a428-caf4-45c6-8181-0f7f8f32d530 0104-6950 10813265 Cyanocharax alburnus ( Hensel, 1870 ) Figs. 50-51 Tetragonopterus alburnus Hensel, 1870: 85 . Type locality: Rio Cadea [rio Cadeia, tributary of rio Cai, Rio Grande do Sul, Brazil]. Holotype: ZMB 7477. Bryconamericus alburnus . ‒ Eigenmann, 1910 (new combination). Astyanax hasemani Eigenmann in Eigenmann, Henn & Wilson, 1914: 10 . Type locality: Porto Alegre [Brazil]. Holotype: FMNH 56659 [ex CM 5476]. - Géry, 1977 (discussion of the generic position). - Malabarba, 1983 (Redescription, discussion of possible relationships and figures). - Malabarba, 1987 (placed as junior synonym of Astyanax alburnus (Hensel) ; holotype figured). Astyanax alburnus . ‒ Malabarba, 1987 : valid, placed as senior synonym of Astyanax hasemani Eigenmann. Diagnosis. The presence of a complete series of 36-39 perforated scales in the lateral line differentiate C. alburnus from C. tipiaia , C. lepiclastus , C. alegretensis , and C. macropinna all of which have interrupted lateral lines. The unpigmented adipose fin of C. alburnus distinguishes it from C. itaimbe and C. dicropotamicus . Description. A description of this species is given in Malabarba (1983) and it is not repeated here.